下行性直肠隔的英文：
DRS, descending rectal septum

drs是什么意思：
【缩写】
=data-reduction system 资料简化系统

Helen, this is Dr. Smith, and this is Dr. Johnson.
海伦，这是史密斯医生，这是约翰逊医生。

Dr. Townsend was a drug addict.
汤森特医生是个嗜药成癖的瘾君子。

Dr Brian was a good listener.
布莱恩医生会耐心倾听他人说话。

descending是什么意思：
v. 下来；下去；下降；下斜；降临；遗传；屈尊；堕落；袭击

derivation; descendent
派生物

You would never descend to fraud.
你绝不能堕落到骗人的地步。

You would never descend to cheating.
你绝不至沦于欺骗。

rectal是什么意思：
a. 直肠的

There was an increase of rectal temperature of 2F or more about 24 hours after exposure
感染后大约24小时直肠体温升高1.3℃以上。

With a test indicating a suspicious PSA level, the doctor would then conduct a digital rectal exam, in which the doctor inserts a gloved finger into the rectum and feels the adjacent prostate.
检测表明有值得怀疑的PSA水平时，医生应做直肠指诊检查，也就是医生用戴手套的手指插入直肠，触摸旁边的前列腺。